Atrisiniet sin(θ_{1})=

$$\sin ( \theta _ { 1 } ) =$$

Diferencēt pēc θ_1

$$\cos(\theta _{1})$$

Darbības, izmantojot atvasinājuma definīciju

Funkcijai f\left(x\right) atvasinājums ir \frac{f\left(x+h\right)-f\left(x\right)}{h} robeža, jo h sniedzas līdz 0, ja šāda robeža pastāv.

$$\frac{\mathrm{d}}{\mathrm{d}\theta _{1}}(\sin(\theta _{1}))=\left(\lim_{h\to 0}\frac{\sin(\theta _{1}+h)-\sin(\theta _{1})}{h}\right)$$

Izmantojiet sinusa summas formulu.

$$\lim_{h\to 0}\frac{\sin(h+\theta _{1})-\sin(\theta _{1})}{h}$$

Iznesiet reizinātāju \sin(\theta _{1}) pirms iekavām.

$$\lim_{h\to 0}\frac{\sin(\theta _{1})\left(\cos(h)-1\right)+\cos(\theta _{1})\sin(h)}{h}$$

Pārrakstiet robežu.

$$\left(\lim_{h\to 0}\sin(\theta _{1})\right)\left(\lim_{h\to 0}\frac{\cos(h)-1}{h}\right)+\left(\lim_{h\to 0}\cos(\theta _{1})\right)\left(\lim_{h\to 0}\frac{\sin(h)}{h}\right)$$

Aprēķinot robežas, izmantojiet faktu, ka \theta _{1} ir konstante, kad h tiecas uz 0.

$$\sin(\theta _{1})\left(\lim_{h\to 0}\frac{\cos(h)-1}{h}\right)+\cos(\theta _{1})\left(\lim_{h\to 0}\frac{\sin(h)}{h}\right)$$

Robeža \lim_{\theta _{1}\to 0}\frac{\sin(\theta _{1})}{\theta _{1}} ir 1.

$$\sin(\theta _{1})\left(\lim_{h\to 0}\frac{\cos(h)-1}{h}\right)+\cos(\theta _{1})$$

Lai izrēķinātu robežu \lim_{h\to 0}\frac{\cos(h)-1}{h}, vispirms reiziniet skaitītāju un saucēju ar \cos(h)+1.

$$\left(\lim_{h\to 0}\frac{\cos(h)-1}{h}\right)=\left(\lim_{h\to 0}\frac{\left(\cos(h)-1\right)\left(\cos(h)+1\right)}{h\left(\cos(h)+1\right)}\right)$$

Reiziniet \cos(h)+1 reiz \cos(h)-1.

$$\lim_{h\to 0}\frac{\left(\cos(h)\right)^{2}-1}{h\left(\cos(h)+1\right)}$$

Izmantojiet Pitagora identitātes.

$$\lim_{h\to 0}-\frac{\left(\sin(h)\right)^{2}}{h\left(\cos(h)+1\right)}$$

Pārrakstiet robežu.

$$\left(\lim_{h\to 0}-\frac{\sin(h)}{h}\right)\left(\lim_{h\to 0}\frac{\sin(h)}{\cos(h)+1}\right)$$

Robeža \lim_{\theta _{1}\to 0}\frac{\sin(\theta _{1})}{\theta _{1}} ir 1.

$$-\left(\lim_{h\to 0}\frac{\sin(h)}{\cos(h)+1}\right)$$

Izmantojiet faktu, ka \frac{\sin(h)}{\cos(h)+1} ir nepārtraukta funkcija pie 0.

$$\left(\lim_{h\to 0}\frac{\sin(h)}{\cos(h)+1}\right)=0$$

Aizstājiet vērtību 0 izteiksmē \sin(\theta _{1})\left(\lim_{h\to 0}\frac{\cos(h)-1}{h}\right)+\cos(\theta _{1}).

$$\cos(\theta _{1})$$

Izrēķināt

$$\sin(\theta _{1})$$